<template>
  <div class="stage">
    <div class="scene">
      <div class="halo">
        <i></i>
        <span class="halo-star"></span>
        <span class="halo-star"></span>
        <span class="halo-star"></span>
        <i></i>
        <i></i>
        <i></i>
      </div>
      <div class="lantern">
        <div class="lantern-handle"></div>
        <div class="lantern-inner">
          <div class="lantern-chain"></div>
          <div class="lantern-head"></div>
          <div class="lantern-body">
            <div class="lantern-spark"></div>
            <div class="lantern-spark"></div>
            <div class="lantern-spark"></div>
            <div class="lantern-flame"></div>
          </div>
          <div class="lantern-base"></div>
        </div>
      </div>
      <div class="planets">
        <div class="planet"></div>
        <div class="planet"></div>
        <div class="planet"></div>
        <div class="planet"></div>
        <div class="planet"></div>
        <div class="planet"></div>
      </div>
    </div>
  </div>
</template>

<script>
export default {};
</script>

<style scoped>
html,
body {
  margin: 0;
  padding: 0;
}

* {
  /*outline: 1px dotted yellow;*/
  box-sizing: border-box;
}

.stage {
  --c-bg: hsl(262, 39%, 20%);

  align-items: center;
  background-color: var(--c-bg);
  display: flex;
  height: 100%;
  justify-content: center;
  overflow-y: hidden;
  width: 100%;
}

.scene {
  height: 500px;
  position: relative;
  width: 400px;
}
.scene::before {
  --c-bg: hsl(262, 39%, 22%);
  --c-glow: hsl(262, 39%, 20%);
  --size: 600px;

  animation: scene-anim 0.6s infinite steps(6);
  background: var(--c-bg);
  border-radius: var(--size);
  box-shadow: inset 0 0 0 3px var(--c-glow);
  content: "";
  height: var(--size);
  left: calc(50% - (var(--size) / 2));
  position: absolute;
  top: -50px;
  width: var(--size);
}

@keyframes scene-anim {
  0% {
    box-shadow: inset 0 0 0 3px var(--c-glow);
  }
  20% {
    box-shadow: inset 0 0 0 8px var(--c-glow);
  }
  40% {
    box-shadow: inset 0 0 0 2px var(--c-glow);
  }
  60% {
    box-shadow: inset 0 0 0 6px var(--c-glow);
  }
  80% {
    box-shadow: inset 0 0 0 3px var(--c-glow);
  }
  100% {
    box-shadow: inset 0 0 0 5px var(--c-glow);
  }
}

.halo {
  --c-1: hsl(257, 39%, 27%);
  --c-2: hsl(259, 38%, 33%);
  --c-3: hsl(322, 41%, 43%);
  --c-4: hsl(346, 86%, 65%);
  --s-core: 100px;
  --s-1: 120px;
  --s-2: 90px;
  --s-3: 60px;
  --s-4: 30px;
}
.halo i {
  --c: var(--c-1);
  --s: var(--s-1);

  animation: 4s halo-anim 0.4s ease-in-out infinite;
  background-color: var(--c);
  box-shadow: 0 0 0 var(--s) var(--c);
  border-radius: 50%;
  display: block;
  left: calc(50% - (var(--s-core) / 2));
  height: var(--s-core);
  position: absolute;
  top: 50%;
  transform-origin: center center;
  width: var(--s-core);
}
.halo i:nth-of-type(2) {
  animation-delay: 0.3s;
  --c: var(--c-2);
  --s: var(--s-2);
}
.halo i:nth-of-type(3) {
  animation-delay: 0.2s;
  --c: var(--c-3);
  --s: var(--s-3);
}
.halo i:nth-of-type(4) {
  animation-delay: 0.1s;
  --c: var(--c-4);
  --s: var(--s-4);
}

.halo-star {
  --size: calc(var(--s-core) + (var(--s-1) * 2) - 15px);

  animation: halo-star-anim linear 5s forwards infinite;
  background: radial-gradient(
      circle at center,
      var(--c-1) 69.5%,
      transparent 69.5%
    ),
    linear-gradient(
      to right,
      transparent 50%,
      var(--c-3) 50%,
      var(--c-3) 52%,
      rgba(255, 255, 255, 0.1) 52%,
      transparent 70%
    );
  border-radius: 50%;
  clip: rect(0px var(--size) calc(var(--size) / 2) 0px);
  display: block;
  height: var(--size);
  left: calc(50% - (var(--size) / 2));
  position: absolute;
  transform-origin: center center;
  top: calc(50% - var(--s-1) + 8px);
  width: var(--size);
}
.halo-star:nth-child(2) {
  animation-delay: calc(5s / 3);
}
.halo-star:nth-child(3) {
  animation-delay: calc((5s / 3) * 2);
}

@keyframes halo-anim {
  50% {
    transform: scale(1.05);
  }
}
@keyframes halo-star-anim {
  100% {
    transform: rotateZ(-360deg);
  }
}

.lantern {
  --c-lantern-body: hsl(262, 38%, 20%);
  --c-lantern-light: hsl(23, 98%, 75%);
  --c-lantern-glow: hsl(343, 83%, 63%);

  display: flex;
  flex-direction: column;
  left: calc(50%);
  position: absolute;
  transform: translateX(-50%);
  z-index: 1;
}
.lantern-handle {
  border: 6px solid hsl(257, 41%, 27%);
  border-radius: 50px;
  height: 105px;
  width: 200px;
}
.lantern-inner {
  animation: lantern-anim 1.2s ease-in-out alternate infinite;
  margin-top: -5px;
  transform-origin: top center;
}
.lantern-chain {
  height: 60px;
}
.lantern-chain::before {
  --c: hsl(260, 38%, 34%);

  background-color: var(--c);
  box-shadow: 0 0 0 5px var(--c), 0 20px 0 var(--c), 0 35px 0 var(--c),
    0 50px 0 var(--c);
  border-radius: 50%;
  content: "";
  display: block;
  height: 10px;
  margin: 0 auto;
  width: 10px;
}

.lantern-head::before,
.lantern-head::after {
  background: var(--c-lantern-body);
  border-radius: 5px;
  content: "";
  display: block;
  height: 15px;
}
.lantern-head::before {
  margin: 0 auto;
  width: 100px;
}
.lantern-head::after {
  border-radius: 3px;
  height: 30px;
  margin: 3px auto;
  width: 60px;
}

.lantern-body {
  perspective: 350px;
  position: relative;
}
.lantern-body::before {
  background-color: var(--c-lantern-light);
  border: 8px solid var(--c-lantern-body);
  border-radius: 50px;
  box-shadow: inset 0 0 0 5px var(--c-lantern-light),
    inset 0 0 0 20px var(--c-lantern-glow);
  content: "";
  display: block;
  height: 195px;
  margin: 0 auto;
  perspective: 100px;
  transform: rotateX(20deg) translateY(-20px);
  transform-origin: center center;
  width: 120px;
}
.lantern-body::after {
  --c: hsl(321, 41%, 42%);
  background-color: var(--c);
  border-radius: 4px;
  box-shadow: -5px 161px 0 1px var(--c), 5px 161px 0 1px var(--c);
  content: "";
  display: block;
  height: 7px;
  margin: -7px auto 0;
  transform: translateY(-195px);
  width: 40px;
}

.lantern-spark {
  animation: lantern-spark-anim linear 2s forwards infinite;
  background: radial-gradient(
      circle at center,
      var(--c-lantern-light) 60%,
      transparent 60%
    ),
    linear-gradient(to right, transparent 10%, #fff 50%, transparent 50%);
  border-radius: 50%;
  clip: rect(0px 30px 30px 0px);
  height: 60px;
  left: calc(50% - 30px);
  position: absolute;
  top: calc(45% - 30px);
  transform-origin: center center;
  width: 60px;
}
.lantern-spark:nth-child(2) {
  animation-delay: calc(2s / 3);
}
.lantern-spark:nth-child(3) {
  animation-delay: calc((2s / 3) * 2);
}

.lantern-flame {
  background-color: #fff;
  border-radius: 50%;
  height: 30px;
  left: calc(50% - 15px);
  position: absolute;
  top: calc(45% - 15px);
  width: 30px;
}

.lantern-base {
  background: var(--c-lantern-body);
  border-radius: 5px;
  display: block;
  height: 15px;
  margin: -15px auto 0;
  width: 70px;
}

@keyframes lantern-anim {
  0% {
    transform: rotateZ(1deg);
  }
  100% {
    transform: rotateZ(-1deg);
  }
}
@keyframes lantern-spark-anim {
  100% {
    transform: rotateZ(360deg);
  }
}

.planet {
  --bg: hsl(257, 39%, 27%);
  --light: hsl(348, 88%, 65%);
  --orbit: 150px;

  animation: planet-anim 5s forwards infinite;
  background: var(--bg);
  border: 2px solid var(--bg);
  border-radius: 50%;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.25);
  height: 30px;
  left: calc(50% - 15px);
  overflow: hidden;
  position: absolute;
  top: 50%;
  transform-origin: center center;
  width: 30px;
}
.planet::before {
  animation: planet-light-anim 2.5s forwards linear infinite;
  background-color: var(--light);
  border-radius: 50%;
  content: "";
  position: absolute;

  top: -20px;
  right: -20px;
  bottom: -20px;
  left: -20px;
}

.planet:nth-child(1) {
  --orbit: 70px;
  animation-delay: -0.3s;
  transform: scale(0.9) translateY(-80px);
}
.planet:nth-child(2) {
  --bg: hsl(344, 83%, 63%);
  --light: hsl(19, 98%, 75%);
  --orbit: 100px;
  animation-delay: -2s;
  animation-duration: 5.5s;
  transform: scale(0.8) translateY(-20px);
}
.planet:nth-child(3) {
  --bg: hsl(344, 83%, 63%);
  --light: hsl(19, 98%, 75%);
  --orbit: 100px;
  animation-delay: -4s;
  animation-duration: 4.5s;
  transform: scale(0.4) translateY(100px);
}
.planet:nth-child(4) {
  --bg: hsl(322, 41%, 43%);
  --light: hsl(348, 88%, 65%);
  --orbit: 120px;
  animation-delay: -3.7s;
  animation-duration: 4.2s;
  transform: scale(0.8) translateY(75px);
}
.planet:nth-child(5) {
  --bg: hsl(322, 41%, 43%);
  --light: hsl(348, 88%, 65%);
  --orbit: 100px;
  animation-delay: -1.3s;
  animation-duration: 5.8s;
  transform: scale(0.4) translateY(40px);
}
.planet:nth-child(6) {
  --orbit: 90px;
  animation-delay: 0.5s;
  animation-duration: 4.2s;
  transform: scale(0.9) translateY(150px);
}

@keyframes planet-anim {
  0% {
    margin-left: calc(var(--orbit) * -1);
    z-index: 1;
  }
  50% {
    margin-left: var(--orbit);
    z-index: 1;
  }
  50.1% {
    margin-left: var(--orbit);
    z-index: 0;
  }
  100% {
    margin-left: calc(var(--orbit) * -1);
    z-index: 0;
  }
}
@keyframes planet-light-anim {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(100%);
  }
}
</style>
